Error: This error happens with users other than the administrator who installed the product: "The database needed for this application is either not running or was not found. Please contact Tech support. Login failed for user

That is because they are not logged in as administrator.  The administrator must give them read/write ability to the Wasp folders and registry entries.

This article applies to Mobile Asset v 4&5, Mobile Inventory v3, and Inventory Control v3.